If you've never tried this, then you're in for a treat. Hint: it is dark in the aditorium! I shot these with my D200 and Nikon 80-200mm f2.8. ISO 800, f 2.8, spot metering, RAW mode. Shutter speeds varied from 1/20th of a second to 1/400th of a second, depending on where she was on the stage. Most ran in the 1/125th to 1/180th range. I was sitting seven rows back, shooting offhand. Oh for a D3 or a D300!!!
BTW, she's talented as well as beautiful.